Lock



J. JUNKUNC.

LOCK.

APPLICATION FILED DEC.20, 1920.

Patented Jan. 31, 1922.

JOHN JUNKnNc, orcmcAGo, ILLInoI s.

1 LOCK.

Speci'fi cationof Letters Patent. 'Patente'd J 3 1, 1922l Application filed December 1920. Serial No. 431,831. 1

To allwhom it may concern 7 Be it known that I, J OHN. JUNKUNG, a citizen of the United States, 'anda resident of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in a Lock; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the numerals of reference marked thereon, which form apart of this specification.

This invention relates, to looks of the dial type.

It is an object of this invention to provide a lock of this type which may be manufac- 1 member.

tured of parts that can be stamped from the metal or otherwiseinexpensively made.

It is a further object of this invention to provide a lock which can be. made so that each one shall require a different set of dial readings to open it without requiring. expensive parts or expensive manufacturing methods to make the result positive and certain.

Other and further important objects of this invention will be apparent from the disclosures in the drawings and specification.

' The invention (in a preferred form) is illustrated inthe drawings and hereinafter more fully described. g

On the drawings? 1 Figure 1 is a face View of Figure 2 is a section-on a cover plate removed.

the lock.

plane with the Figure 3 is a central section in a plane at right angles'to that of Figure2. Figure 4: is a detail view of one sliding Figures 5, 6 and 7 are-views 'similar, to

Figure 2, showing the lock in different positions.

Figure 8 1s a plan view of the under slde of the cover plate.

Figure 9 is a section upon the line'9-9 ofFigure7.

As shown on the drawings: 7 The lock comprises a shackle; 1 look proper 2. The lock proper is contained within a housing 3 and its parts are held in position by a stamping 4. A portion 5 near the central part of this stamping is struck down and the end of it is turned horizontal and providedwith a hole 6 whichcooperates with. a hole 7 in the center of the stamping to-holdin positiona portionof and the The outer end of the memberas shown at 9 is hook-shaped. The stamping is .also 1 pro; vided witha trough-like depression 10-1ex tending across it to afford space'for one'arm g.

of theshackle. It has another depression 11 extending only partly acrossit toprovide for the shorter arm of the shackle 1. These the wire member This portion serves as a r spindle with which the member may,turn

I depressions" and the. turned-over endof the portion 5 serve ,to position the stamping against the bottom of the housing. This po' sitioning may be better determined and the stamping firmly fixed in place by striking down another portion as indicated-at 12, the

lower edge of the struck" down portionc0ntacting. with-the bottom-of the housing.

Secured to the upper face of the. stamping is a ring 14 which is separated from the housing 'by-a space 15.

Slidably; mounted within this space 15 ,are two members .each

formed in an arc of-a circle-Q One-of' these 16 is made of wire and is shown in detail in Figure 4c. The other 17 is. shown in Figures 2 to 7 and 9. The member 16 is of, generally oblong'shape. It has lower and'upper arcuate portions 19 and'28. .Theends of these I are upright portions 18. and 21,- thelatter serving vto connect the. two arcuate portions.

Inthe portion l9 is introduced abend; 2(l.

This bend together witlrthe uprightportion "at the ends of the member 'afiords ample bearing for the, member against the walls, of the space 15*so that the member will not be- ,come tilted out'of position. -In the; arcuate portion '23 is introduced a flattened portio'n Y e 22 to render the whole sufliciently resilient so thatthe membershallgnot becrowdedby the cover plate The member 16. is of suffic ent length to extend circumferentially along the space 15'- adistance nearlyequa'hto thatseparating the two interior faces ofthe Shackle I The circumferential length o f the member 17 issufiicient to extend from one;. to..the other of the external faces thereof f Thus one of these members i less than a semigether do not make a complete circumference. That-portion of the circumference of circle and the other is more,"butthfetwo' to the casing occupied by the twocarmsof theshackle must .be subtracted from; a complete circumference to make :the. combined length oftheparts16and17. I

The part 17..h asjthree notchesgcut .inQit at the points 24,-

and-26. The middleone i -of these ;notches 24 is combined with a the member 17.

groove upon the outer face of the member 17 and serves to weaken the member so that the two parts thereof may be readily bent about the thin wall of this groove as a pivot accuracy needed for the purpose described *below.

Above the parts just described is positioned a rotatable cap 27 the upper part ot which is milled to afford a good grip for turning the same. A slot 28 is cut in the edge of this cap to receive the wire 8 and rotate the same when the cap 27 is rotated. A

portion of the wall of the cap 27 is struck outtoform a projecting part 29, which atfords an index point to co-operatewith the dial 30. The edge of the cap has two notches 31 and 32 therein at such a distance apart that when the cap is in the position illustrated .in Figure 7 they will align with the longer leg of the shackle.- Notch 31 is not as deep as notch 32. This co-operates with the form of the shackle leg as will be explained later to permit the shackle to be pulled out but not entirely removed from the lock.

'-Upon" the shackle are grooves 33 and 34E.

The. outer groove crosses both legs of theshackle and meets the longer leg a second time as indicated by a cutaway corne'rat the end of the longer leg. The inner groove crosses this leg twice and is shown as a mere cut-away corner at the end ot the shorter leg.- The outer one of these grooves is of the same radius as the space 15. The inner one is of thesame radius as the edge of the rotatable cap 27. The grooves are concentric with eachother and when the shackle is forced home into the lock are concentric with the members 16 and 17 and with the rotatable cap 27. The longer leg of the shackle also has a flattened portion 35 adjacent the groove 34 and a reduced portion 36 between the flattened portion and the end of this leg. The stationary ring 14 has portions of its lower margin cut away as indicated in Figure 9 to afford a passage for the shackle.

The upper margin of the housing 3 is provided with a shoulder 37 affording a seat for the cover plate 38 which is secured in place by spinning the thin edge of the wall of the housing over the edge of the cover plate as is shown in Figures 3 and 9. The outer side of the cover plate carries the dial until the end of it contacts with the memwhen the dial is not visible.

at a definite position.

lyre recs index 30, while the inner side of the cover plate has a series of notches 39 and a larger notch 40. The center of the cover plate is cut out to provide a passage for the head of the cap 27 and at one point a V-shaped notch 4:1 is provided to permit the passage of the struck out portion 29.

The operation is as follows:

The operation of the device is best explained by assuming that the shackle is locked and describing the operation of unlocking it. The first step in this operation is to rotate the cap 27 clockwise until the aarts reach the osition indicated in Fi ure 2. When the cap-is rotated it rotates the wire arm 8. The end 9 of thisarm, when the rotation is clockwise, contacts withthe inward projection at the notch 26 in the member 17. The rotation is continued clockwise; the member 17 is moved clockwise ber 16, as shown at 42 in Figure 2. .Then: the rotation is continued clockwise until the two memberslG'and 17 are brought to a definite positionby bringing the projection 29 opposite the-number zero upon the dial 30. shown in Figure 2.

clockwise until the member 16 is brought into position between the legs of the shackle as indicated in Figure This may be done by rotating the cap 27 until thepoint 29 comes opposite the-necessary number upon the dial 30, or it may be done, without-looking at the dial 30, as tor example at night For this pur pose the resilient character of the wire '8 The parts then occupy the positions The neXt step is to rotate the member is used. The upturned rounded back ofthe end 9 seats in the notches 39 and 4:0. I When the projecting part 29 is opposite the dial 0, the end ofthe wire 8 is seated in the notch 40. As thewire 8 passes the several notches a click is readily distinguished either by r sound or by sense ot: touch. By counting the number of cl'icksthe dial may be stopped The next step after bringing the parts into i position shown in Figure 5 is to rotate the cap 27 counter-clockwise the necessary dis tance to bring the part into the position shown in'Figure 6. This distance may be measured either by means of the dial or by the plate as already indicated. During the first part ofthis movement the cap 27 moves only the wire 8. This wire leaves the projection at the notch 26 andtouches nothing until it reaches the projection at the notch 25. Then it moves the member 17 but the member 16 remains stationary. This movementthus separates the member 17 from the member 16; consequently, space for the passage of the shackle between them is provided.

The cap is then rotated again clockwise size, but by changin which separates the wire 8 from the pro- The reduced part 35 of the longer leg of 1' the shackle enables this to passthe shallow notch in the margin of the cap. This notch is not deep enough to enable the full sized part 43 of the shackle to pass. The shackle therefore may be withdrawn far enough for unlocking purposes but cannot be completely removed from the lock. 7 All danger of the shackle being lost is therefore avoided. The cut-away portion 36 of the shackle arrives at the wall of the'lock housing when the end 43 of the shackle contacts with the wall of the cap. This affords free play for ro- V tative movement of-the shackle and the lock is therefore readily used for locking various objects even though not otherwise readily accessible.

The parts 16 and 17 must be of standard length. circumferentially for all'locks of one the position ofthe notches 25 and 26 in t e part 17 and of the notch 28' in the cap 27 various combinations of dial readings may be made to unlock different individual locks. The member 17 may be definitely positioned in the machine that makes the notches 25; and 26 by means of the notch 24:, and the cap 2'? maybe definitely positioned in the machine that makes the notch 28 by means of the struck up part 29. Thus the setting of these two machines is all that is necessary to produce a lock requirlng a glven dial combination. V v I I am aware that numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore'do not.

purpose limiting the patent'granted otherwise than necessitated by the prior art.

I claim as my invention i 1. Ina look, a circular roove, two arcuate members adapted to sli de'in said groove, the combined length of said members being less than the length of said groove, whereby one of said members can be made to drive the other along the groove 1n either directlon with a lost motion upon change of direction, means for driving one of said members in one direction and then in the other direction, 7 and means for indicating when the driving member has reached the position corresponding to a travel overa portion "of said lost x motion.

a 2. In a look, a housing, a resilient arm rotatively mounted in said housing, a cover plate for thehousing, a circular" series of notches on the underside of said cover plate, a projection on said arm adapted tocooperate with said notches, and.mean's pro jecting through the cover plate for rotating.

said arm. g V

'3. In a lock, a'shackle, grooves on said shackle, a housing into which said shackle .is adapted toslide, a cap for said housing,

the edge of the cap co-operating with said grooves to hold said shackle in its inner most position, a portion of the shackle between two of said grooves being reduced to smaller dimensions than the body of the shackle, and a portion of the shackle at therend thereof being of larger dimensions than said I'QdUCGClPOItlOIl, twonotches in i the edge of said cap, one of a size to let said: i

end portion ofthe shackle pass and the other of a size to let the reduced portion pass but not the end portion, whereby, when said notches are positioned in line with the shackle, the shackle may be withdrawn to an outermost position but not entirely removed from the housing and when the notches are otherwise positioned theshackle is retained in its innermostposition.

4. An arcuate 'member formed of wire,-

said member having a generally oblong formand having two transverse portions of wire in addition to the end portions, the upper longitudinal portion having a part of wire of different cross-sectional shape from .Tthe wire in the rest of the member.

5. lock frame, a circular 'roove therein, shackle, passages in said lock frame through which the legs of the shackle are adapted to pass across said groove, grooves in the'legs of the shackle adapted to register 7 with'said groove in the lock frame to form a complete circular'groovewhen'the shackle is mounted, arcuate members adapted to slide in said groove, the combined circumferential length of said members being less than a whole circumference by the length of the.

members are properly positioned, there is room between them for .the passage of the non-grooved part of the shackle, and means including an-indicator for positioning the slidable members.

In testimonywhereof I have hereunto subscribed my name in the scribing witnesses.

. JOHN J UNKUNC. Witnesses:

CARLTON HILL, 7.. H. WHITTEN, Jr.

- grooves in the shackle, whereby, when the presence ofvtwo sub- 

